Lifting jack



Sept. 14 1926. v

- J. A. MORRISON LIFTUG JACK Filed Oct. 12. 1925 2 Sheets-Sheet 1 J. A. MORRISON Sept. 1 4 l1926.

LIFTING JACK Filed Oct. 12. '1925 2 Sheets-Sheet 2 l gmmtoz J A Maf/'iwan Patented Sept; 14,V 1926.

UNiTEn -STATI-:s iiii'iiiLiv'il loFFiciz.

.aci-1N' A. noaRIsoN, or MANsFmLD, omo.

Application led October 12, 1925. Serial No. 61,963.

This invention relates to jacks such as are usedfor raising automobiles inl order to permita tireto be removed or repaired, and inoreparticularly to a jack especially adapt- 5 ed' for. use upon vehicles equipped -with i balloon tires, in which it necessary provide for a greater lifting range 'than is necessary for the standard type of tire.

It is customary to use a wheel of -sinall diameter for balloon tires, as thecross sectional vdiameter of the balloon tire is considerably -greaterthan that of the ordinary.

tire, thus -requiring a greater lifting-range than is necessary for standard tires.

'lheapplicant has devised and patented jacks for providing a sufficient lifting range to properly handle vehicles equipped with .balloon tires, sucli'jackscomprising a lift. ing bar' made up of two or moreY members and involving a greater expense in manufac` ture than that required to make the ordinary single lifting jack.

The objects of the f-present invention arev to provide a lifting jack having any necessary lifting range required to handle a vehicle'equipped' with balloon tires, ai single lifting member being provided for raising 'thevehicle to the desired height; 'to provide a lifting head upon one side of the lifting lmember for engagement with the spring or axle of the vehicle; to provide means for swinging the lifting head into various `positions around the jack to permit fthe -jack to' channel for engagement ''withvany of said ribs and havingy a lifting head located near its lower portion; and said ribs may be pro- `vided with T .lanes for engagement with a C flange upon t e lower end Aof. the lifting arm', i.; i v i Y A Parts swiveled to the upper end of the screw an Y provided..v with a groove or- An embodiment of. the invention is illustrated in the accompanying drawings,

which Figure 1 is 'aside elevation of a lifting Fig. 2, a section on the line 2-2 Figure l; Fig. 3, fied form of theinventioin andt lll,

a sideelevation of a slightly' niodv jack embodying the invention, parts being broken away for the purpose of illustration ;4

Fig. 4, a transverse. section onthe line Li-,4,iig.ai

Similar numerals indicate corresponding throughout the drawings. The lifting jack includes the hollow base 1, having. the edestal portion 2, and provided, preferab at intervals of degrees, .l

with the radial, vertical ribs 3, which may be of cross sectional T shape, as shown in Figures 1 and 2. l j

A bracket 4 is, formed in the upper end of 'the hollow base and la rotatable nut 5 is mounted within said bracket and receives the lift-ing screw 6 which normally extends into the hollow base and is provided with .aA

transverse pin or lug '7 slidably engaging vertical grooves 8, within the base, for preventing rotation of the screw.

v- A ball race as indicated at 9, may be provided between therotatable nut and the upper end ofthe base t'o receive the thrust of the lifting screw. The nut-5 has a bevel pinion 10 `formed thereonv and meshing' with a bevel pinion 11` vfixed upon a short shaft 12, which isxjournaled in the angular boss 13, formed upon the bracket 4, and pro-4 vided "wth a socket 14 to lreceive the shank ofthe usual'operating handle.

'The' lifting arm- 15 is provided at its upper end with. the right angle portion '16, swiveled to the upper end -of the lifting screw 6. As shown in Figure 1 this lifting arm may be provided with a socket 17 adapted'toreceive the reduced shank 18, of the lifting screw, a split spring ring 19 bcing received in .the annular grooves 20, formed in the shank land socket, whereby the arm isl rotatably mounted or swiveled upon the screw;

If desired this'swivel connection '-may be formed las' shown in Fig. 3, wherein the an.

gle ortion 16 of'theliftin arm is provide with an opening 21, which loosely fits upon the reducedshank 22ofrthe screw, a

los y coil spring 23 being located around said shank between the lifting arm and the head 24.

The ribs 3, as shown in Figs. 1 and 2, may be provided with T flanges 25 to receive the C flanges 26 formed at the lower end of the I- lifting arm 15, whereby the arm will be held height to be received beneath the spring or axle of an yautomobile when in the lowered or normal position.

` Since the lifting arm is swiveled upon the screw, itwill be seen that the arm may be the rib upon the base,

swung around the base and engaged With any one of the ribs 3 thereon in order that the lifting head may be located at either side or directly in front of the base, thus permitting the operator to stand near the end of thc automobile and engage' the' jack with either spring or the axle as desired.

The spring or axle engaged by the lifting .head 28 may be located in engagement with the adjacent side of the lifting arm, thus preventing tilting or tipping of the jack as the lifting arm is raised. This engagement of the spring or axle With the v,liftingarm will tend to hold the arm in engagement With this being especially useful with the type of jack shown in Figs. 3 and 4.

I claim 1. A lifting jack including a base, a lifting member carried thereby, an arm suspended at its upper end from the lifting member and provided with a lifting head,

, and cooperating means upon the base and vone of a plurality arm for causing said arm to travel in any of definite paths as the lifting member is raised.

2. A lifting jack including a base, a lift- 29, formed near the lower por# tion of the lifting arm and ata convenientA ing member carried thereby, an arm swiveled at its upper end to the lifting member and provided with a 'lifting` for causing the arm to travel in any one of a plurality of definite member is raised.

3. A lifting jack including a base, a lifting member carried thereby, an arm swiveled at its upper end to the lifting member and providedv with a lifting head, and co-operating, engaging means upon the base and arm for causing the arm to travel in anyone of a plurality of, definite member i's raised.

4. A lifting jack including a base, member carried thereby, eled at its upper end to and provided with a lifting head, means for swinging the arm to a plurality of definite positions around the base, and means for holding the arm in any of these positions as the lifting member is raised.

a lifting a lifting arm swivhead, and 3o-operat- `mg, engagmg means upon the base and arm paths as the liftingv paths as the lifting the lifting member a plurality of vertical ribs thereon, a liftin member carried thereby, an arm connected at its upper end to the lifting member and provided with a channel for selectively engaging any of said ribs, upon the arm.

, 6. A lifting jack including a base having a plurality of vertical ribs thereon, a lifting member carried by eled at its upper end upon the lifting member and provided with a channel arranged to engage any of said ribs, and a lifting head carried by the arm. I

7. .A lifting jack including a base having a plurality of vertical T ribs thereon, a lifting member carried by the base, an arm swiveled at its upper en-dupon thelifting member and provided with a C channel arranged to engage any of said T ribs, and a lifting head carried by the arm.

In testimony hereunto subscribed my name.

and a lifting lhead I the base, an4 arm swiv' that I claim the above, .I'have 'i 

